RNA helicase EIF4A1-mediated translation is essential for the GC response.
Life Sci Alliance
; 7(2)2024 02.
Article
em En
| MEDLINE
| ID: mdl-38011999
ABSTRACT
EIF4A1 and cofactors EIF4B and EIF4H have been well characterised in cancers, including B cell malignancies, for their ability to promote the translation of oncogenes with structured 5' untranslated regions. However, very little is known of their roles in nonmalignant cells. Using mouse models to delete Eif4a1, Eif4b or Eif4h in B cells, we show that EIF4A1, but not EIF4B or EIF4H, is essential for B cell development and the germinal centre response. After B cell activation in vitro, EIF4A1 facilitates an increased rate of protein synthesis, MYC expression, and expression of cell cycle regulators. However, EIF4A1-deficient cells remain viable, whereas inhibition of EIF4A1 and EIF4A2 by Hippuristanol treatment induces cell death.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Linfócitos B
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RNA Helicases
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Fator de Iniciação 4A em Eucariotos
Limite:
Animals
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article